Evolution of title of long ACL papers. Each column shows terms distinctive to a set of consecutive years. Size indicates frequency; order characteristicness.

1979-19831984-19881989-20082009-20102011-20152016-20182019-2022
natural language interfaceprojectmachine learningweb searchjoint inferenceattention modelbert
designtree adjoining grammarsunification - baseexpectationdistributional semanticslstmpre - train
issuemachine translation systemautomatic acquisitionlettersegmentation useneural semanticpre - training
accesscomputerlrphrase - base statistical machinedual decompositiondeep reinforcement learningtransformers
productionsharingmaximum entropysystem combinationdeciphermentsequence learningfew - shot
databasedesignlexicalizedhierarchical phrase - base translationaclskipmulti - hop
computernatural language interfacecorpus - basebinarizationreordersequence modelspretraine
speech actproductionlarge corporabase statistical machine translationrecursive neuraldeep neural networkspretrained
interfaceunification grammarco - occurrencephrase - base translationunsupervised semanticbanditpre - train language model
experimentalcategorialunificationsemi - supervised learningwalkcharacter - levelcontrastive learning